Tampa Bay Buccaneers cornerback Aqib Talib has been suspended four games for using Adderall.

Talib's suspension will start with Sunday's game against the Kansas City Chiefs. He does not plan on appealing the ban, a league official told ESPN NFL Insider Adam Schefter.

"Around the beginning of training camp, I made a mistake by taking an Adderall pill without a prescription," Talib said. "This is especially regrettable because, for the past several months, with Coach Schiano's help, I've worked very hard to improve myself -- professionally and personally -- as a player and a man. I am truly sorry to my teammates, coaches and Buccaneers fans, and I'm disappointed in myself."

Talib will be eligible to return to the Buccaneers' active roster on November 5.

"I have spoken with Aqib, and he knows that he made a poor decision that let our team down," Buccaneers coach Greg Schiano said. "Certainly, other players will have the opportunity to step up while he serves this suspension."

It's not the first trouble for Talib, who was suspended without pay for the 2010 regular-season opener and also fined one additional game check for violating the league's personal conduct policy. That discipline stemmed from an altercation with a St. Petersburg cab driver during training camp in August 2009.

In 2011, Talib avoided a suspension for his arrest in connection with a shooting in Texas. He later had those charges dropped.